CLAMP 4519869 - Caterpillar

Illustration 1 g01372204
Typical example
Open vent screw (1). Turn the keyswitch to the RUN position until fuel free from air flows from the connection. Turn the keyswitch to the OFF position.
Tighten the vent screw to 7 N m (61 lb in).
Turn the keyswitch to the RUN position. Leave the keyswitch in the RUN position for 1 minute.
Turn the keyswitch to the OFF position. Note: Damage to the fuel injection pump, to the battery, and to the starting motor can occur if the starting motor is used excessively to purge the air from the fuel system.
Illustration 2 g01354358
Typical example
Loosen the flare nuts (1) for the high pressure fuel lines on all of the fuel injectors.
Do not crank the engine for more than 10 seconds. Allow the starting motor to cool for 30 seconds before cranking again.Do not engage the starting motor when the flywheel is turning.
Operate the starting motor and crank the engine. Observe the loosened connections.
When fuel free from air flows from the connection tighten the connections.
Tighten the flare nuts to a torque of 29 N m (21 lb ft).
The engine is now ready to start. Operate the engine at low idle for a minimum of five minutes immediately after air has been removed from the fuel system. Note: Operating the engine for this period of time will help ensure that the pump is completely free of air.